A swim spa combines the features of a hot tub and a small swimming pool. They are typically 4‑6 m long and around 2.5 m wide and can be installed outdoors on a reinforced concrete base with a simple electrical hook up. Manufacturers note that customers invest around £25,000–£50,000 for a swim spa, which is still less than the £60,000+ cost of an in‑ground pool. Installation is similar to a hot tub and often involves a concrete base and hard‑wired electrics.
Running costs are higher than a standard hot tub because there is more water to heat and circulate. Guides estimate an average monthly cost of around £210 – roughly £7 per day – consisting of about £180 per month for electricity (based on approximately 600 kWh of power consumption), under £30 per month for chemicals and about £3 per month for water. Factors such as climate, insulation, water temperature, cover quality and usage patterns will affect your electricity consumption. Good insulation and a high‑quality cover help keep heat in and lower the energy bill.
Maintenance is similar to a hot tub. Swim spa water should be balanced and filtered and is typically changed every three to six months, depending on usage and water quality. Regular tasks include daily debris removal, weekly checks of sanitizer and pH, monthly filter cleaning and a quarterly deep clean. Self‑cleaning models can go a full year between water changes.
A well‑built swim spa should last at least 15 years when properly maintained. The only significant running costs beyond energy and chemicals are occasional repairs, which are typically charged by the hour (£100–£120 per hour). Investing in a high‑quality model with robust insulation, pumps and cabinetry will reduce the likelihood of expensive repairs later.
Swim spas create a strong, adjustable current using powerful jets or a propeller system. This allows you to swim in place against the current; many units have multiple speed settings so both casual swimmers and fitness enthusiasts can get a workout. However, the swim lane is shorter than a full‑length pool, so elite swimmers may find the stroke length limited. For most homeowners looking to swim for fitness or therapy, the current provides a challenging, low‑impact workout.
Because you are continuously swimming against a current, a swim spa offers an excellent cardiovascular and strength‑training workout. Swim spas provide a unique blend of fitness and relaxation and can improve cardiovascular and respiratory health, help with weight management and offer stress relief. The buoyancy reduces stress on joints, making them ideal for weight‑loss programmes and for those with arthritis or mobility issues.
While swim spas are smaller than commercial training pools, they are used by professional and competitive swimmers for technique work and endurance training when space is limited. Adjustable current settings allow athletes to focus on stroke efficiency and to monitor their technique via mirrors or cameras. However, for long‑distance training, a full‑length pool may still be preferred.
Swim spas have some disadvantages compared with traditional hot tubs and pools. They require more heating, pumping power and chemicals, so running costs are higher than a hot tub. Seating is less spacious than a hot tub, and their size may not allow for as many loungers. Installation can be more involved because swim spas are heavy and require a reinforced base. Finally, the upfront price is high compared with a hot tub, though still typically less than an in‑ground pool.
A swim spa is a worthwhile investment for households that want both exercise and relaxation in a single, compact package. You gain year‑round swimming, massage therapy and a space to socialise, all on a footprint smaller than a pool. If you primarily want a place to soak and socialise, a traditional hot tub may be more cost‑effective. Conversely, if you have the space and budget for laps or entertaining, a pool could be better. Weigh up your fitness goals, available space and budget before deciding.
For great deals on premium spas and hot tubs, browse our in‑stock hot tubs. If your spa or tub needs servicing, you can book servicing or book a repair with our trusted team. To enhance your setup, explore our accessories including covers, steps and cleaning kits.
